Originally Posted by redheadedrod
Has anyone considered trying to use a Projector as a HUD?
If it's for simple numerics (speedo, tacho, etc), 7-segment LEDs may be fine.
They may have the normal "sun washout" issues (unless shaded via mounting) but otherwise have similar problems like the need for a film to prevent double-reflection, but are much cheaper...
Nice HUD from Taiwan:
Their website is flash-only, but does give some more info: